The answer to this problem is A
Answer:
Step-by-step explanation:
step 1
Find the slope of AB
we know that
The formula to calculate the slope between two points is equal to
we have
A(5,-1), B(9, -9)
substitute the values
step 2
Find the slope of the line that is perpendicular to AB
we know that
If two lines are perpendicular, their their slopes are opposite reciprocal (the product of their slopes is equal to -1)
we have
therefore
The slope of the perpendicular line is
step 3
Find the equation of the line in point slope form
we have
substitute
step 4
Convert to slope intercept form
Isolate the variable y
Answer:
only the first option is correct
Step-by-step explanation:
Let the bank balance be b
b is less than $20;
This mean ;
b < $20
So let us select the correct options;
a. This is correct
As we can see, b represents the bank balance which is the variable in the inequality
b. This is incorrect
The inequality symbol is <
c. This is incorrect
The inequality symbol needed is not 20